Berlei post surgery bra

Hello all Before I had my first mastectomy I received a care package from BCNA and Berlei. It had a post surgery bra and a soft form insert. I am now having another mastectomy in 3 weeks and although I am not in need of another bra I would really like another of the soft form inserts in a medium size. They are really comfy and not heavy to wear. Can anyone suggest where I could get one from. Appreciate your advice, happy Australia Day hope you are all well. Tracey